 <!DOCTYPE html>
 <html lang="en">
 <head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>下拉列表的使用</title>
 </head>
 <body>
  籍贯：
  <select name="" id="">
    <option value="">山东</option>
    <option value="beijing">北京</option>
    <option value="tianjin">天津</option>
    <option value="shanghai" selected = "selected">上海</option>
    <option value="chongqing">重庆</option>
  </select>
 </body>
 </html>